#include <Arduino.h>
#define d3 14
int num = 0;

void service_Exit5()
{
  num++;
  Serial.printf("The Count of Exit5 is %d",num);
  Serial.println();
  digitalWrite(d3,!digitalRead(d3));
}

void send_plus()
{
  digitalWrite(19,!digitalRead(19));
  delay(1000);
}
void setup() {
  Serial.begin(115200);
  pinMode(d3,OUTPUT);
  pinMode(19,OUTPUT);
  attachInterrupt(5,service_Exit5,FALLING);
}

void loop() {
  send_plus();
}
